I ended up creating a filter: Newgroup that begin and end with rec.crafts.metalwork --> "Watch Threads". Then viewing "Watched Threads with Unread". Seems to work.
Is there a more direct way to filter messages intended only for this newsgroup?
Seamonkey 2.0.11 definitely does NOT work the same as Thunderbird 5.0. I played with it for a bit, and never could figure out how to get the filters to run on the existing message base.
Figured, "Hey, the search function will use the same RE as the filter, so I'll play around with searching." Out of the 500 messages I put there, it found THREE that met the criteria, but there were definitely more than that.
Best recommendation I can think of is to try Seamonkey 2.2 and see if the filtering has been updated the same as Thunderbird 5.0.
As DoN noted, 'Newgroup' is not a header name, 'Newsgroups' is. Next line is an example header. Newsgroups: rec.crafts.metalworking
I use Pan rather than Seamonkey or Thunderbird for newsreading, but tried some newsgroup filter experiments with Thunderbird. Under Tools it has option 'Run Filters on Selected Messages', which applies filters to currently selected messages. If Seamonkey has that option, just press ctrl-A to select all messages on the articles tab before using it.
The Thunderbird option 'Run Filters on Folder' is grayed-out and not available when the articles-list tab is selected. Filtering selected messages on the articles tab works ok, except that Thunderbird 3.6 only filters on Subject, From, and Date headers or on message size. It does not support filtering on the Newsgroups header or on message content.
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